AU2003292044B2 - Sieve Jigger - Google Patents
Sieve Jigger Download PDFInfo
- Publication number
- AU2003292044B2 AU2003292044B2 AU2003292044A AU2003292044A AU2003292044B2 AU 2003292044 B2 AU2003292044 B2 AU 2003292044B2 AU 2003292044 A AU2003292044 A AU 2003292044A AU 2003292044 A AU2003292044 A AU 2003292044A AU 2003292044 B2 AU2003292044 B2 AU 2003292044B2
- Authority
- AU
- Australia
- Prior art keywords
- rocker
- lifting
- hydraulic oil
- hydraulic cylinder
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 241001584775 Tunga penetrans Species 0.000 title claims abstract description 24
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 26
- 238000006073 displacement reaction Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000011343 solid material Substances 0.000 claims description 6
- 239000010727 cylinder oil Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
- B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
- B03B5/24—Constructional details of jigs, e.g. pulse control devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
- B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
- B03B5/12—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs using pulses generated mechanically in fluid
- B03B5/18—Moving-sieve jigs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
- Fluid-Pressure Circuits (AREA)
- Glass Compositions (AREA)
- Golf Clubs (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Abstract
The aim of the invention is to provide a sieve jigger comprising a sieved-product rocker that can be pivoted upwards and downwards, whose lifting displacement and/or lifting frequency can be controlled beyond previously accepted limits and which does not require vibration dampers that are subject to wear. To achieve this, the sieved-product rocker is operated by means of a lifting and braking cylinder comprising an integrated measuring device for the displacement of the cylinder piston and a working chamber, to which a hydraulic-oil supply and evacuation conduit is connected, said conduit containing an integrated proportional control valve. The lifting and braking cylinder interacts with the proportional control valve by means of a displacement sensor and a governor in order to control the displacement upwards and downwards and thus the lifting height and/or the lifting frequency of the rocker.
Description
WO 2004/047996 PCT/EP2003/012933 Sieve jigger
DESCRIPTION
The invention relates to a sieve jigger for sorting solid material mixtures, such as raw coal or other minerals, in a separating liquid, such as water, according to density, in particular for the pre-separation of tailings, comprising a rocker that can pivot in the water bath and carries the sievedproduct carrier and the sieved-product, which rocker executes an upward stroke by way ofa pivotedly connected hydraulic cylinder and a downward stroke by letting it fall under the force of gravity.
From the leaflet 4-230d of KHD Humboldt Wedag AG of June 1989 the so-called ROMJIG sieve jigger is known for the pre-separation of tailings from raw coal. The jigging takes place here in a water bath. The loosening of the material required for the sorting according to density is produced by the lifting or pivoting upward and dropping down of a rocker which is mounted pivoting in the water bath and carries the sieved-product carrier and the product. The lower specific density coal and the higher specific density tailings are separately discharged from the jigging machine by a lifting wheel.
With the known sieve jigger the upward pivoting movement, i.e. the upward stroke of the sieved-product rocker takes place by hydraulic oil flowing into a single-acting hydraulic cylinder which engages the rocker.
On reaching a lifting height of, for example, 300 to 400 mm, the rocker is allowed to drop and moves downwards again as a result of its own weight (including the sieved-product) of, for example, 4000 to 5000 kg. In doing so the loaded rocker at the end of its downward movement falls onto at a~44k[ SWORN TRANSLATOR GER.FRE.SPA.
UT,
00L Sleast two hydraulic vibration dampers, which are able to transmit the forces released 0 during the falling down of the rocker in an as jolt-free as possible manner. It was found that with this type of rocker drive the lifting frequency of the rocker is limited to approximately 40 strokes per minute. In addition, the vibration dampers are subject o ware and an undesirable heat generation.
r" The aim of the invention is to provide a sieve jigger comprising a sieved-product rocker that can be pivoted upwards and downwards, the lifting displacement and/or lifting Ofrequency of which can be controlled beyond previously accepted limits and which does N 10 and which does not require vibration dampers that are subject to wear.
It is the object of the present invention to substantially overcome or at least ameliorate one or more of the above disadvantages.
According to a first aspect of the present disclosure, there is provided a sieve jigger for sorting solid material mixtures in a separating liquid bath according to density, comprising: a rocker arranged to pivot in the liquid bath and to carry the solid material mixtures; a hydraulic cylinder with a single working pressure chamber pivotally connected to the rocker to lift the rocker upwardly and to brake a downward movement of the rocker; a displacement measuring device operatively connected to a piston of the hydraulic cylinder; a hydraulic oil supply and evacuation conduit connected to the single working pressure chamber of the hydraulic cylinder; a proportional control valve located in the hydraulic oil supply and evacuation conduit; a governor; the displacement measuring device being operatively connected via the governor to the proportional control valve in order to control the upward movement and the downward movement of the rocker, in a first lifting phase, a second free-fall phase and a third deceleration phase, including controlling at least one of a lifting displacement and a lifting frequency.
1354558-1 0o 3 0 With the sieve jigger according to the disclosure the drive of the sieved-product rocker takes place neither with a usual single-acting hydraulic cylinder nor with a usual so-called
O
t double-acting cylinder. On the contrary, the drive of the sieve jigger according to the s invention is designed as a lifting and braking (hydraulic) cylinder which uses one single cylinder working pressure chamber to perform various tasks. Connected to this hydraulic c cylinder of the single working pressure chamber is a hydraulic oil supply and evacuation c conduit with integrated proportional control valve. The hydraulic cylinder is furthermore Sequipped with a measuring device for the displacement of the cylinder piston, the S 10 measuring signal of which is fed by way of a displacement sensor to a governor, which is operatively connected to the proportional control valve in order to control the upward movement and the downward movement and thus the lifting height and/or lifting frequency of the rocker.
The control intervention on the proportional regulating valve takes place here in such a way that for the pivoting upwards of the rocker hydraulic oil is fed through the hydraulic oil supply and evacuation conduit into the single working pressure chamber of the hydraulic cylinder until before the upper dead point of the piston is reached, and for lowering the rocker it first falls in free fall while displacing hydraulic oil from the hydraulic cylinder of the single working pressure chamber and discharging hydraulic oil through the same conduit, followed by hydraulic braking of the cylinder piston before the lower dead point is reached. The hydraulic drive cylinder accordingly at the same time takes on the function of a controlled vibration damping, i.e. the rocker does not require own mechanical vibration dampers for limiting the lifting displacement of the rocker.
The first cycle of the hydraulic cylinder consist, therefore, of the lifting phase of the rocker, the second free-fall phase of the rocker and the third braking phase of the rocker, wherein all three phases can be controlled independently. The sieved-product rocker can, therefore, be controlled in respect of its lifting displacement and/or its lifting frequency beyond previously accepted limits, and the operation of the sieve jigger can be optimised further with regard to the throughput 1354558-1 00 3a C and/or its separation effect in dependence on the respective sorting process, the Cd respective mineral mixtures that have to be sorted, etc.
t c n The disclosure will be explained in more detail in the following with reference to the exemplified embodiment illustrated diagrammatically in the figures.
C Fig. 1 illustrates diagrammatically in vertical section a sieve jigger for the density Csorting of raw coal in operation.
mc 1354558-1 WO 2004/047996 4 PCT/EP2003/012933 Fig. 2: shows as detail drawing the drive of the sieved-product rocker using a hydraulic lifting and braking cylinder, and Fig. 3: shows the upward and downward movement of the sieved-product rocker of Figure 2 seen at the connection point of the lifting and braking cylinder, in a diagram in which the lifting height is plotted against the time With the sieve jigger of Figure 1 the density sorting of the charged raw coal 10 takes place in a water bath 11. The loosening of the material required for the sorting is produced by the pivoting upwards and downwards of a sieved-product rocker 12 with pivoting axis 13 located in the water bath 11. Linked to a crossbar of the rocker 12 at a linkage point 14 is the piston rod 15 of a hydraulic cylinder, which according to the invention is designed as a lifting and braking cylinder. The lifting height of the rocker representing part of a circular arc is indicated by the double arrow 17. At a mass of the rocker 12 including the material of approx.
4000 to 5000 kg, the lifting height 17 of the rocker amounts, for example, to approx. 300 to 400 mm at a lifting frequency of, for example, 40 strokes per minute.
The transport of the to be sorted material 10 through the sieve jigger takes place by the movements of the rocker 12 as well as by the slope pressure of the material. Whereas the tailings with the higher specific density are drawn off via a discharge roller 19, the coal with the lighter specific density as well as the middlings 20 are drawn off through an own chute.
Both products, i.e. tailings and coal/middlings are discharged from the jigger separately from one another by a twin lifting wheel 21 and in doing so are de-watered, while the fines 22 that have fallen through the sievedproduct carrier into the drum are discharged from the jigger at the bottom and fed to a fines sorting.
SWORN TRANSLATOR
GER.FRE.SPA,DUT,
WO 2004/047996 PCT/EP2003/012933 Integrated into the pivotedly mounted lifting and braking cylinder 16, shown on a larger scale in Figure 2, is a displacement measuring device 23 for the piston 24, wherein the measuring signal is passed via a signal line to a displacement sensor 25, which in turn via a signal line 26 is connected to a governor 27. Connected to the working chamber of the cylinder 16 is a hydraulic oil supply and evacuation conduit 28, in which a proportional control valve 29 is integrated. The lifting and braking cylinder 16 is operatively connected via the governor 27 via a further signal line 30 to the proportional control valve 29 in order to control the upward movement and the downward movement and accordingly the lifting height 17 and/or the lifting frequency of the sieved-product rocker 12.
As can clearly be noted from the operating diagram of Figure 3, the operating cycle of the lifting and braking cylinder 16 consists of three phases, i.e. the lifting phase of the rocker 12, the free-fall phase of the rocker and a braking phase of the rocker, wherein all three phases can be controlled independently. The difference between the upper and lower piston position of the lifting and braking cylinder 16 corresponds to the lifting displacement 17 of the rocker 12 of, for example, 350 mm, wherein the lifting displacement range lies between the limits of the upper dead point OT and the lower dead point UT of the cylinder piston 24.
The proportional control valve 29 is arranged in the hydraulic oil circuit between the motor-driven hydraulic oil pump 31 of the hydraulic unit and the working chamber of the lifting and braking cylinder 16.
The control intervention on the proportional control valve 29 takes place in such a way that for the lifting, i.e. the upward movement of the rocker 12, hydraulic oil is fed through the hydraulic oil supply and evacuation conduit 28 into the working chamber of the lifting and braking cylinder 16 until AW4fq1Zt-E SWORN TRANSLATOR
GER.FRE.SPA.OUT,
WO 2004/047996 PCT/EP2003/012933 before the upper dead point OT is reached, and in order to lower the rocker 12 it first falls in free-fall during which hydraulic oil is displaced from the working chamber of the cylinder and hydraulic oil is discharged through the same conduit 28 followed by a hydraulic braking of the cylinder piston 24 before the lower dead point UT is reached.
According to the diagram of Figure 3 the time for a working cycle of the lifting and braking cylinder 16 at a rocker lifting displacement of 350 mm is 1,36 sec, which corresponds to a lifting frequency of f 44. An electronic timing generator system 32 included in the proportional control valve 29 ensures an accurately timed supply of hydraulic oil to the hydraulic oil conduit 28 for the purpose of maintaining the three successive periodic time intervals for the lifting phase, free-fall phase and braking phase of the rocker 12, wherein these three phases in each instance result in a working cycle of the lifting and braking cylinder 16.
SWORN
TRANSLATOR
GER.FRE. SPA.OUT,
Claims (4)
1. A sieve jigger for sorting solid material mixtures in a separating liquid bath according to density, comprising: a rocker arranged to pivot in the liquid bath and to carry the solid material Smixtures; Sa hydraulic cylinder with a single working pressure chamber pivotally connected t' to the rocker to lift the rocker upwardly and to brake a downward movement of the S 10 rocker; a displacement measuring device operatively connected to a piston of the hydraulic cylinder; a hydraulic oil supply and evacuation conduit connected to the single working pressure chamber of the hydraulic cylinder; a proportional control valve located in the hydraulic oil supply and evacuation conduit; a governor; the displacement measuring device being operatively connected via the governor to the proportional control valve in order to control the upward movement and the downward movement of the rocker, in a first lifting phase, a second free-fall phase and a third deceleration phase, including controlling at least one of a lifting displacement and a lifting frequency.
2. The sieve jigger according to claim 1, wherein a control intervention on the proportional control valve takes place in such a way that in order to lift the rocker hydraulic oil is fed through the hydraulic oil supply and evacuation conduit into the single working pressure chamber of hydraulic cylinder before an upper dead point is reached, and in order to lower the rocker it first falls in free-fall during which hydraulic oil is displaced from the single working pressure chamber of the hydraulic cylinder and hydraulic oil is discharged through the same evacuation conduit followed by the hydraulic braking of a cylinder piston before a lower dead point is reached.
3. The sieve jigger according to claim 2,
1354558-I 00 Z wherein the working cycle of the hydraulic cylinder consists of the first lifting e( d phase of the rocker, the second free-fall phase of the rocker and the third braking phase of the rocker, wherein all three phases can be controlled independently.
4. The sieve jigger according to claim 2, wherein the difference between the upper and lower piston position of the C hydraulic cylinder corresponds to the lifting displacement of the rocker, wherein the lifting C displacement range lies between the limits of the upper dead point and the lower dead Cpoint of the cylinder piston. C l0 The sieve jigger according to claim 1, wherein the governor connected via a signal line to the displacement measuring device of the hydraulic cylinder is connected via a further signal line to the proportional control valve, which is arranged in the hydraulic oil circuit between the hydraulic oil pump and the single working pressure chamber of the hydraulic cylinder. 6. The sieve jigger according to claim 1, wherein the proportional control valve includes a controllable electronic timing generator system. 7. A sieve jigger for sorting solid material mixtures, in a separating liquid bath according to density, said sieve jigger being substantially as herein before described with reference to any one of the embodiments, as that embodiment is shown in the accompanying drawings. DATED this twenty-second Day of September, 2008 KHD Humboldt Wedag GmbH Patent Attorneys for the Applicant SPRUSON FERGUSON 1354558-1
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10255321.1 | 2002-11-27 | ||
| DE10255321A DE10255321A1 (en) | 2002-11-27 | 2002-11-27 | Stauch typesetting machine |
| PCT/EP2003/012933 WO2004047996A1 (en) | 2002-11-27 | 2003-11-19 | Sieve jigger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2003292044A1 AU2003292044A1 (en) | 2004-06-18 |
| AU2003292044B2 true AU2003292044B2 (en) | 2008-10-23 |
Family
ID=32318725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2003292044A Expired AU2003292044B2 (en) | 2002-11-27 | 2003-11-19 | Sieve Jigger |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7571815B2 (en) |
| EP (1) | EP1567276B1 (en) |
| CN (1) | CN1318145C (en) |
| AT (1) | ATE366143T1 (en) |
| AU (1) | AU2003292044B2 (en) |
| DE (2) | DE10255321A1 (en) |
| WO (1) | WO2004047996A1 (en) |
| ZA (1) | ZA200504211B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823016B (en) * | 2010-03-19 | 2012-07-04 | 陈义 | Wet-type vibration-swing combined gravity concentrator |
| DE102012201042A1 (en) | 2012-01-25 | 2013-07-25 | Mbe Coal & Minerals Technology Gmbh | Method for operating air-setting machine for separation of e.g. coal and mountains, involves selecting control of stroke speed of setting surface such that setting surface moves faster in mid-plane during lowering stroke on setting bed |
| CN104863912B (en) * | 2014-11-06 | 2017-05-24 | 山东泰安煤矿机械有限公司 | Liquid control system for buddle jig |
| CN104747622A (en) * | 2015-02-06 | 2015-07-01 | 张斐斐 | Rotating shaft brake device of oscillating separator |
| CN205518163U (en) * | 2016-01-26 | 2016-08-31 | 张路征 | Three conjuncted product movable sieve jigs |
| CN112888506B (en) * | 2018-08-17 | 2023-06-09 | 普欧萨汀吉格斯国际(私人)有限公司 | Separation device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563271A (en) * | 1983-06-20 | 1986-01-07 | Krupp Polysius Ag | Percussion jig |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2734736C2 (en) * | 1977-08-02 | 1984-08-16 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Discharge control method for a compressed air-controlled wet setting machine |
| DE3322137A1 (en) * | 1983-06-20 | 1984-12-20 | Krupp Polysius Ag, 4720 Beckum | Movable-sieve jig |
| DE3428824A1 (en) | 1984-08-04 | 1986-02-13 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Method and device for controlling a jigging machine, in particular a movable-sieve jig |
| DE3531240C2 (en) * | 1984-10-09 | 1987-02-12 | MAN Gutehoffnungshütte GmbH, 4200 Oberhausen | Electronic valve control for setting machines |
| US5207742A (en) * | 1992-03-09 | 1993-05-04 | Svedala Industries, Inc. | Control apparatus for coal/mineral jigs |
| DE4302672C1 (en) * | 1993-01-30 | 1994-05-26 | Ruhrkohle Ag | Pneumatic machine for typesetting - has air chamber producing pulsations, which is connected via inlet valve to compressed air feed and via outlet valve to air outlet |
| AUPN531995A0 (en) * | 1995-09-08 | 1995-10-05 | University Of Queensland, The | Dynamic monitoring and control of jigs |
| DE102004048071A1 (en) * | 2004-10-02 | 2006-04-20 | Ina-Schaeffler Kg | Valve drive for a cam-operated lift valve |
-
2002
- 2002-11-27 DE DE10255321A patent/DE10255321A1/en not_active Withdrawn
-
2003
- 2003-11-19 WO PCT/EP2003/012933 patent/WO2004047996A1/en active IP Right Grant
- 2003-11-19 AU AU2003292044A patent/AU2003292044B2/en not_active Expired
- 2003-11-19 CN CNB2003801044312A patent/CN1318145C/en not_active Expired - Lifetime
- 2003-11-19 AT AT03767572T patent/ATE366143T1/en not_active IP Right Cessation
- 2003-11-19 EP EP03767572A patent/EP1567276B1/en not_active Expired - Lifetime
- 2003-11-19 DE DE50307630T patent/DE50307630D1/en not_active Expired - Lifetime
- 2003-11-19 US US10/536,521 patent/US7571815B2/en active Active
-
2005
- 2005-05-24 ZA ZA2005/04211A patent/ZA200504211B/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563271A (en) * | 1983-06-20 | 1986-01-07 | Krupp Polysius Ag | Percussion jig |
Also Published As
| Publication number | Publication date |
|---|---|
| US7571815B2 (en) | 2009-08-11 |
| DE10255321A1 (en) | 2004-06-17 |
| ZA200504211B (en) | 2006-02-22 |
| WO2004047996A1 (en) | 2004-06-10 |
| US20060163123A1 (en) | 2006-07-27 |
| CN1318145C (en) | 2007-05-30 |
| WO2004047996A9 (en) | 2005-07-21 |
| EP1567276A1 (en) | 2005-08-31 |
| AU2003292044A1 (en) | 2004-06-18 |
| DE50307630D1 (en) | 2007-08-16 |
| ATE366143T1 (en) | 2007-07-15 |
| CN1717281A (en) | 2006-01-04 |
| EP1567276B1 (en) | 2007-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TC | Change of applicant's name (sec. 104) |
Owner name: KHD HUMBOLDT WEDAG GMBH Free format text: FORMER NAME: KHD HUMBOLDT WEDAG AG |
|
| FGA | Letters patent sealed or granted (standard patent) | ||
| PC | Assignment registered |
Owner name: MBE COAL & MINERALS TECHNOLOGY GMBH Free format text: FORMER OWNER WAS: KHD HUMBOLDT WEDAG GMBH |
|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |